Training Systemwww.SRM.de

Torque Analysis

User Manual

SRM Training SystemTorque Analysis

User Manual

Publication date: Dec 06, 2012

The manual is available in PDF Format at http://www.srm.de

TORQUE

ANALYSIS

TABLE OF CONTENTS

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

System Setup

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Software preparations / Hardware installation . . . . . . . 9

Network setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Software setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Screens

Main screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Analysis screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Statistics screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Log screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Utilities

Simulator & cadence bell . . . . . . . . . . . . . . . . . . . . . . 22

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

OvErviEw

The SRM Ethernet Torque Analysis hardware and software is designed to

display pedaling torque inputs in real time and provide the user with the

ability to record and analyze data.

Torque data is useful when working to determine optimum bike fit, the result

of changes made to position, athlete pedaling dynamics, and when working

to rehabilitate after injury. Data collected can be saved, reloaded, and expor-

ted for use in various other applications and formats.

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rEquirEmENTS

• SRM Ethernet Torque Analysis Box

• SRM Powermeter with wired coil and sensor cable

• Computer running either: MS Windows XP, Vista or 7;

Mac OSX 10.5 or higher; or Linux Kernel 2.6 or higher

• Java Interpreter installed on the computer

• Ethernet connection and Cat5 patchcable

- Page 7 -

- Page 8 -

SySTEm SETup

Connections

The SRM torque analysis box will connect as follows:

• Sensor: Analog sensor cable • Ethernet: LAN connection

• Digital: Reserved for future use • + 5v DC: Power supply

• Cadence: indicates a revolution

• On: indicates if powered up

Note: Power delivery from USB port on a computer is not sufficient to run

the SRM Ethernet Torque box. Please use the external power supply.

SySTEm SETup

Software preparation

1. Download the latest SRM torque software from www.srm.de

2. Install the software. If needed, Java runtime environment will be

downloaded and installed automatically

Hardware installation

1. Doublecheck PowerMeter installation/sensor cable

2. Connect SRM Ethernet Torque Analysis Box to the sensor cable

Use the analog input port of the SRM Ethernet Torque box

3. Connect AC Power supply to the power input port of the SRM

Ethernet Torque Analysis Box, check if power led (green color)

is on (see troubleshooting for any problems)

4. Secure SRM Ethernet Torque box in stable position

5. Start pedaling and check if the cadence led (amber color) is

flashing once per revolution

6. Connect the network cable to the LAN port on the

SRM Ethernet Torque Analysis Box and to your computer

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SySTEm SETup

Network setup

1. Check the SRM Ethernet Torque box default IP address on the

bottom of the outer case. The last digit of your PC's IP address

(see next step) has to differ from the one of the torque box.

2. Choose a free and valid IP address for your computer in the same

subnetwork as the SRM Ethernet Torque Analysis Box (192.168.0.x)

If you are using MS Windows: Press „Start“ button, open „Control

Panel“, select „Network and Sharing Center“, click „View Network

Connections“, right click on the connection you need to change

(i.e. LAN) then „Properties“, on „Network“ tab double click on

„Internet Protocol Version 4 (TCP/IPV4)“ and insert the choosen

IP address.

If you are using Apple OSX: Launch „System Preferences“ from the

Apple menu (or Spotlight), click on the „Network“ icon, in the lower

right, click on the „Advanced“ button, in the pulldown menu next to

„Configure IPv4 „select „Manually“ and insert the chosen IP address.

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SySTEm SETup

Software setup

1. Launch the SRM Torque Software

2. When the software first runs, a writable folder needs to be defined

to save the data. Select a folder.

3. Main screen is now shown; go to Settings by clicking on the lower

right corner button or through the Options-Settings on the top menu

and configure the program

Start pedaling, and check the connection indicator on the lower left corner of

the screen: this indicator should be green, if not go to log tab and check the

messages. Program settings and log file will be stored under the user's

document folder:

win Xp: C:\Document and Settings\Document\SRM

TrainingSystem\SRMTorque

win vista/7: C:\Users\Document\SRM TrainingSystem\SRMTorque

OSX: /User/Documents/SRM Training System/SRMTorque

- Page 11 -

SCrEENS

main screen

The majority of this screen is taken by a graph showing online data:

the x-axis of this graph is measuring the angle of revolution in degrees

the y-axis represents the torque in Newtonmeters.

The right side of this screen has two buttons: Record /Stop and Reset

Pressing the Record button begins recording, pressing the Reset button

clears all stored data. Here you can define the „Automatic stop“ settings.

Selecting „None“ will result in recording revolutions until stopped manually.

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Selecting „Revolutions“ will result in recording the specified

number of revolutions entered. Selecting „Time“ will result in

recording the specified seconds of time entered.

The „Notes“ area is for entering information specific to the

revolution data that you record; any notes entered here will

be displayed in the revolution table in the „Analysis“ view.

Directly below the main graph, there is a field showing

numerically the index of the revolution with the relative

cadence and power:

The bottom of the main view has a tracking feature which allows

you to see specific angle and torque data as you mouse over

the graph.

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SCrEENS

Analysis screen

The top part of this view contains a revolution table, showing data from all

recorded revolutions with the appropriate graph for the selected revolutions

underneath.

Zoom with the mouse. Hold the left mouse button and open a zoom window

or turn the mouse wheel to zoom in/out. Click and hold the left mouse button

and wipe left/right to zoom out. The right graph can be set to show two diffe-

rent torque graphs: „Overlapped“ and „Rounded“: „Overlapped“ displays tor-

- Page 14 -

que data split into two series: from 0 to 179 and from 180 to 359 degrees:

„Rounded“ displays torque data split into 2 inverted series to better visualize

roundness of complete revolution:

Note: Moving the mouse cursor over the revolution line in the graph will

popup a message that shows the degrees of the relative series:

Selecting multiple revolutions results in the graphical display of all revoluti-

ons (For windows operating system, this is done by pressing Ctrl-Click.

When using Mac OS, this is done by pressing Command-Click).

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The right side of this view has an „Export - Save and Load“ area; to export

data, first select the desired revolutions:

Then select the output format (CSV, PNG, or PDF) and choose what type of

graph(s) you need. Pressing the „Export“ button will export all selected revo-

lutions.

CSV File syntax (for each exported revolution):

ROW 1: Header: Index, Cadence, Power, Torque, Slope, Zero, Delay,

CrankLenght, Weight, ROW 2 ... N: Body: Angle [Deg], Value [Hz]

To calculate the average graph of revolutions select two or more revolutions.

Press the „Calculate Average“ button in „Data Operation“ area.

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The „Save“ button allows you to save all checked revolutions (marked with

the „Save“ column in revolution table); the number of revolutions is shown

on the „Save“ button.

All files will be saved in the data folder defined in the „Settings-System“ win-

dow. The naming of the SRM Torque Analysis file (.sta) is:

„initials-YYYY.MM.DD HH.mm.SS.sta“

where „initials“ will represent the system's user name.

The „Load“ button allows you to open revolutions previously saved; press

the „Load“ button, select a file, then press „Load File“ button (uncheck

„Update Statistics“ if you do not want the file to

affect current statistics)

Pressing „Select File“ allows you to Load ano-

ther file; when all files are loaded, press

„Close“ to exit the window

The „Marker operation“ area is used to delete

and colorize markers. First, select one or more

revolutions, then click a starting point, followed

by an ending point. The delta of these two

points will be displayed in the lower left corner

of the graph, showing both „Angle“ in degrees

and „Torque“ in Nm.

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SCrEENS

Statistics screen

The upper half of this view contains two histograms that show the Cadence

and Power distribution for all recorded revolutions.

The lower half of this view contains a scattergraph that shows the relations-

hip between Cadence and Power for all recorded revolutions

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SCrEENS

Log screen

The Log view contains a complete listing of all relevent events that occured

in the software during the current session:

Connection information

Save messages

Load messages

Device status

Error notifications

Recording events

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SETTiNgS

The Settings window has 5 tabs. The „Graph“ tab allows you to change the

number of simultaneous revolutions shown on the main graph, as well as

select custom colors for each revolution by clicking on the color. The „Add“

and „Delete“ new revolution buttons allow you to change the number of

revolutions shown between 1 and 10. Checking the „Automatic torque scale“

box will result in a self-adjusting y-axis for torque values. By leaving this box

unchecked, you can manually select the maximum torque value shown on

the y-axis of the main graph.

The „User“ tab contains the user information. The profile drop-down box

contains a list of all available users with their information shown when selec-

ted. To change any parameters to a user, select the appropiate user, insert

the new value and click „Apply modification“ button. To delete a user, select

user and press „Delete User“ button. To create a new user, input a user

name for the profile, all the information, then click „Add User“ button. The

current user profile is shown in red. To change the user, select a different

user from the „User profile“ drop-down box, and click „Set Default User“ but-

ton; the current user information will be updated.

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The most important information for a selected user profile as name, weight

and crank length are shown in the statusbar on the bottom of the window

when it gets updated.

The „PowerMeter“ tab is needed to change PowerMeter's parameters: the

zero offset value and the slope of the PowerMeter as well to define where

the revolution starts. The „Network“ tab allows to change all network settings

like IP address and port.

The „System“ tab shows all network interfaces on your computer and is im-

portant when configuring your network address. Also, the destination folder

for stored data can be changed here.

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uTiLiTiES

Simulator

The simulator is a part of the SRM Torque Analysis software that allows

simulation of revolutions; to enable this go to „Utilities - Simulator“ menu and

then press start.

Make sure to select „Simulator“ also in the „Network profile“ on the settings

menu.

Cadence Bell

This option will enable a cadence signal for each revolution when the signal

is triggered.

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TrOuBLESHOOTiNg

general

• Power LED doesn't switch on

Check the power supply and the power cable connection

• Cadence LED doesn't flash for each revolution

Check the position of the sensor: the correct position is a tangental

point to the coil of the PowerMeter, at a perpendicular angle. Normally,

this is a point 5cm from the center of the PowerMeter axle. Move or

rotate the cable while pedaling until Cadence LED flashes.

• Power / Torque values shown on „Main“ screen are not accurate

Ensure the PowerMeter settings are correct: check the slope and the

zero offset values on Settings-Powermeter window

• No connection between the PC and the SRM Ethernet Torque Box

Check the network configuration on your computer, ensure the IP

address is the same subnetwork of SRM Ethernet Torque Analysis box

• SRM Ethernet Torque Box's IP adress lost

Use the DeviceInstaller Utility to find and setup a new IP adress

• The revolution graph is not in the right position

Check the relative parameter on „PowerMeter profile“ considering

the activation point

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TrOuBLESHOOTiNg

powermeter related issues

• Position of the sensor cable

Check position of sensor cable to ensure it is passing over the

cadence switch at a distance in between 3 and 5 mm.

• Powermeter - no signal

If the position of the sesnor cable is okay and still no signal of the

PowerMeter is received, the battery might be the reason. The battery

is not self-replaceable. You will need to send the PowerMeter for SRM

for replacement. Battery life of the PowerMeter varies between

PowerMeter models (700-1900 hours of use). If the variance of your

zero-offset frequency is higher than normal and your hours of usage is

in the range above 700 hours, your battery likely needs to be replaced.

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TABLE OF SymBOLS

Comands

Start recording

Stop recording

Reset all revolution data

Export - Save & Load

Export selected revolutions

Save checked revolutions

Load a SRM Torque Analysis file (.sta) with raw revolutions data

Data operation

Makes the calculation of the average of the selected revoltions

(you need to select at least two revolutions to enable this button)

marker operation

Delete marker

Color picker

Settings

Add new profile

Delete selected profile (this profile cannot be the default profile)

Makes selected profile as default

Applies modification

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Simulator

Starts the simulator

Stops the simulator

message icons

Notifies a general message

Notifies a question message

Notifies an error message

Device connection LEDs

Device correctly connected

Device not connected

Notifies a warning, click con the icon to be redirect on the log

Help

Help request (the embedded manual will be open)

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Srm gmbH Office germany Rudolf Schulten Str. 6

52428 Jülich / Germany Tel: +49 2461 69123 0 Fax: +49 2461 69123 17

Srm Service Center, inc. uSA720 West Monument Street

Colorado Springs, CO 80904 / U.S.A. Tel: +1 719 266 4127Fax: +1 719 266 4284

Srm italiaVia della Rimembranza, 726

55100 Lucca / ItalyTel: +39 0583 332036Fax: +39 0583 331684

Srm Oceania104 B Weston Road

St. Albans, Christchurch 8052Tel : +64 3355 94 67Fax: +64 3355 94 69

http://www.srm.de